Plate-clamping mechanism for printing-presses.



W. EVEN SEN. PLATE GLAMPING MECHANISM FOR PRINTING PRESSES,

APPLICATION IILED MAY 9, 1910.

Patented Apr. 4,1911.

2 SHEETS-SHEET 1' w. EVENSBN, PLATE GLAMPING MECHANISM FOR PRINTINGPBESSES.

, APPLICATION II LED MAY 9, 1910.

Patented Apr. 4, 1911.

2 SHEETS-rBHEET 2- seams; or cnx 'caso,

reenter-teams. fcnains ramming qpmlrani, 0F onioaedamimb'rs,aoonronnrron or rnmnors',f

\ rnarn-cminrme Milo To all whom it mc'yconcern:

- Be'itknown that I, WILLIAM EvENsEN, a

citizen of the UnitedStates, residing atChi- 'cago, =in the county of.Cook and State of Ill1nois,:have invented certain new and use fulImprovements in Plate-Clamping Mechanismfor Printing Presses, of whichthe following/is e. specification, reference being .had to thei 'accompanying drawings.

My invention relatesto-l plate-clamping I mechanism for printingpressesand particularly' to that. .typeof "plate-clamping mech- .anisrn-inwhich -'the plate-clamps are capa I blegof'separat'e' adjustment, inorder to permitth'e employment of plates of different widths, and areconnected with a movable member in such a way that by the movement ofthe movable member they are simulv I More particularlylstill, myinvention re.- "lates to improvements in plate-clamping mechanism ofthe-kindshown-and described in Letters'Patent to me, No. 905,162, of De-.cemberl, 1908. g 'Theobject ofmy invention is to provide newand imroved locking mechanlsm by whichthe plate-clam ing mechanism mayautomaticall locke in its'plate-clampin position, and a so in its 'openposition, an

which isadapted to beunlocked only by the insertionef the toolby whichthe movable member is moved toclamp the plate-clamps against. theplateor move them awaythere from.- i I As a further improvement, myinvention looks'to the. providing of such automaticlocking mechanismofsuch a character as to permit the insertion or removal of the toolonly when said plate-clamps are in their nn-pletely locked or-in theirfully unlocked 'cn." By'the provision ofv such mechm' I am enabled toconstruct plate-clamping mechanismwhich is always sure to be firmlylocked against the plates before the -press be started and therebyprevent accidents arising from the plates not being -,.completely andfirmly locked, and also ren- '1 dering the lockingand IIIIlOClIIIIgcertain,- efiicient and secure. 1

the accompan in .drawings :--F1gu're 1 represents a -portionj'of one endof a plate cylindeif with g =my jimproved .mechamsn'r attached";-='FigFQWis-an end View of a part taneously clamped upon' the edge ofthe,

.mounted in any well known approved manno part of my present. invention."by which-theclamping movement is effected,

- screws the plate-clamps may be readily and provided at its lower endwith an eccentric made of the .same width as the block 15,1

t swams a; 1

Application filed may 9, 1910. Serial No. 560,246.

of .a.. :plat e-cylinder showing the operating tool in position; Fig.3'is an enlarged detail, being a vertical section through line 3-3 ofFig.1; Fig. 4' is an enlarged detail, being a a section on of Fig. 3;andFig. 5 is an enlarged detail, being a view of the sliding bearingblock in which the lower end of the eccentric-cylinder is mounted.

With the exception of the locking devices hereinafter. described theplate-clamping mechanism is the same as that shown and described in theLetters Patent to me, above I 9 ner, preferably in the manner shown anddescribed in my above named Letters Patent,

screw-threaded openings through which the screws 9 pass, whereby, bythe. turning of the screws 9 in one direction or the other, the clamps.10 may be independentlyadjusted on the cylinder. All theseparts arewell known and are fully shown and described in my said Letters Patentand form It isenough to say that by the. rotating of theindependently-adjusted on the cylinder,in

order .to provide. for different widths of plate, in the well knownmanner. 12 indicates a cylindrical block which is.

mounted so as to turn in a corresponding.

opening in the movable member 7, andis located centrally of thecircumferential length thereof. The cylindrical block 12 is trunnion 13which is rotatably mounted in a suitable. openin 14 in a block 15. The

block 15 is locate in a suitable recess 16 in the body of the cylinder.The recess 16 is:-

" 9 in which the cylindrical block 12rmoves,

like the corresponding parts shown and described in my said LettersPatent, their operation is briefly described as follows :By means of theoperating tool 17 the cylindrical block 12 may be turned in its bearing,and this turnin in one direction or'the other slides the blocl 15 in onedirection or the other in the recess, and by the operation of theeccentric trunnion operates to move the movable members longitudinallyof the cylinder so as to simultaneously move the plateclamps against theedge of the plate and lock the same firml on the cylinder, or, moving inthe opposlte direction, to unlock the clamps from the plate.

The automatic locking devices to which my invention. specificallyrelates are as follows :l Tear the bottom of the opening 17 thecylindrical block 12 is provided with-an openin 18 from the periphery ofthe cylindrical lock to the square opening or socket 17 1 9 indicates apin which is slidingly mountedin the opening 17 and is provided at itsinner end 'with a rounded head 20. This in is of a length justsufiicient to extend rom-the outer surface of the cylindri-'- cal block12. to the surface of the socket 17. 21 indicates a pin which is seatedin a tubular support 22 so as to slide longitudinally ofitself therein.The tubular support 22 is secured in the movable member 7 opposite theinner side of the socket 17 and so as to register with the opening 18.The innerend of the tubular support 22 extends into a suitable opening'23, in the type cylinder 6, so as-to slide back and forth thereinlongitil'dinally of the cylinder when the mov-- able members 27 aremoved to and fro. The pin 21 is provided with a stem 24 so as to form aperipheral shoulder 25 on pin 21. -26 indicates a spiral spring which isseated around the stem 24 in the tubular support 23, bearing at itsinner end against the bottoni of thetubular support and at its other endagainst the shoulder25. The spring operates to normally force the pin 21outward when free to move. 27-28 indicate depressions in the sides ofthe cylindrical opening above opening 18' and above the pin 21. 29indicates a pin having a rounded head 30 which is shdingly mounted in asuitable opening in the cylindrical block 12, near the top thereof, inregister with de ressions 27-28, and so as to have a limited motionlongitudinally of itself. 31 indicates a depression or notch on. theperiphery of the cylindrical block 12 at such a point as to be broughtinto register withthe pin 21 when the'cylindrical block is turned, andinto which,when it is so brought into register with the pin, the pin 21is projected by the spring 26 as is shown in dotted lines in Fig. 1.-This depression or notch 21, as is best shown in Fig. 4, is preferablyformed by cutting into the block 12 from its periphcry in the directionof a chord to the are ending at its bottom in a shoulder, against whichthe pin 21, when projected into the same, abuts. When the pin 'is thusprojected into the depression 31 it is obvious that the rotation of thecylindrical block in one direction is prevented by the slide block 15being in contact with one end "of the recess 16, and rotation in theother direction is prevented by the pin-21. The shank of the op eratingtool, squared to fit the squa're'socket 17 is provided upon each of itssides with a depression 32, which, when the tool is placed in position,is adapted to register with the rounded head 30 of the pin 29. hen theblock 12 is so rotated that "the pin- 29 comes into register with eitherof the openings 27-28, the shank of the tool can of the toolbeing'beveled o; sg as to push thepin 29 back 1nto one or the gtheriofthe openings 27-28 as the shank arias-.1001 is inserted. As soon as thetool is inserted to its full depth the depressions 32 are brought intoregister with the rounded end of the pin 29 which is thus free to moveback so 5 be insertedinto the socket 17 the lower end that its outer endmay be flush with the I periphery of the cylindrical block. The openings2728 are rounded and the end of the pin 29 is curved to correspond withthe eriphery of the cylindrical block 12 so that when the cylindricalblock 12 is turned the pin 29 will be pushed back by the engagementofics rounder head with the opening. The depressions 32 are ofsufiicient' depth to permit the outer end of the pin 29, when pushedback, to be flush with the surface of block 12 and permitits rotation.The depressions 32 are ronnded -to conform to the rounded head 30 of pin29 so that the pulling out of the tool will push back the pin 29.

In Fig. 1 the parts arewshown in such a position that the movable member7 is at the-- inward limit of its motion on cylinder 6 whichbrings'the'clamps 10 into locking position against the plate. When inthis position the sliding pin'l9 is in register with spring seated-pin21, and, the operating tool being out, thepin 19 is free to move nwardpermitting the pin 21 to be pushed outward by the spring into thedepression 31 looking e-the parts firmly in position. against rot n-Thei'pullin itrot the handle-has also projectedth'epi '29fintodepression 27. -I tbeing desired to unloekthe clamps from theplate, the shank ofwthe toolis inserted into:

rection causing the movable member 7 to be moved outward on thecylinder, carrying with' it, simultaneously, clamps 10' away from theedge of the plate and unlocking the same. It will be obvious that assoon as the pin 29 has passed the opening 27 it is prevented from beingprojected outward and consequently the operating tool cannot be removeduntil the rotation has'continu-ed far enough to bring the pin 29 intoopposite depression 28.'- This opening 28 is so placed that theregistrationof the pin 29 therewith 30 occurs when the movable member '7has reached the extreme outward limit of its motion and theeblock 15 isbrought into contaQt, With! the opposite end of the recess 16. Inthisjposition the pin 29 is free to. move outwardlyiinto recess 28 andthe tool may be removed. LlVhenthe parts are in this last describedunlocked position it is obvious that the tool can be inserted, the pin29 being free to-be pushedback into'depression 28. It being desi-redtolock the plate the tool is thereupon rotated ina clockwise direction,the rotation forcing the pin 29 back into the, depression on the toolshank. As soon asthepin, moving in this direction, passes out ofregister with the depression 28 it is obvious that the tool cannot beremoved until the. pin 29 is again brought into register with opening27. This rotation moves the movable membe 7 and the plate-clampsscribed, at which position only can the tool be removed. The removal ofthe tool leaves the pin 19 again free to move, permitting 5 pression31,- locking the cylindrical block 12 against backward rotation and thuslOCKHlg the plate-clamps in their locked position upon the plates.

That which I claim as my invention, and desire to secure by LettersPatent, is

1. In combination, a plate-support, a movable member adapted to receivean-operating tool, plate-clamps connected with said movable member andadapted by its movement to be simultaneously moved into and 5 the socket172:1 Thispushes back-the pin 19 which pushes back pin 21 against spring.26

ment to be simultaneously moved into and cylindrical block 12 in acontra-clockwise di-- inward into the locking position, above de spring26 to thrust forward pin 21, into de- I out of lockedpositioncon aplate, and lock ing devicesnadapted to automatically lock said movablemember inplate-locking posi-. tion and to be. disengaged therefrom onlyby the insertion of the operating tool.

2. 'Incoinbination, aplate-support, a movable member, adapted to receivean operating tool, plate-clamps connected with said movable member andadapted byits move-- out of locked position on a' plate, and lockingdevices adapted to automatically lock said movable member inplate-locking posi '--v i tion and to be disengaged therefrom onlyby theinsertion of the operating tool, said locking devices being adapted topermit the insertion of the operating tool when said mov-r' able memberisin plate-locking or unlocked 3. In combination, a platesupport, amovable member adapted to receive an operating tool, plate-clampsconnected withsaid move able member and adapted by its movement to besimultaneously movedinto and out of locked position on a plate, andlocking devices adapted to automatically lock said movable member inplate-locking position, and to bedisengaged therefrom only by, theinsertionof the operating tool, said locking devices being also adaptedto permit the in-v sertion or removal of the operating tool only whensaid movable member is in plate-locking .or unlocked position. 4. Incombinat on, a plate-cylinder, plateclamps slidingly mounted thereon, amovvable member movable longitudinally of the cylinder and adapted byits inward movement to simultaneously lock the clamps upon a plate, amoving device connected withsaid movable member and said cylinder: and 1adapted to receive an operating toolgandybyq. its turning, to move saidmovable member longitudinally of the cylinder, and locking mechanismcarried by said cylinder and said, movable member and adapted toautomati-' cally lock said movable member. against movement in itsplate-lockingposition an to be unlocked therefrom onlyfby' the insertion of the operating tool.- i 5'. In combination, a plate-cylinder, gpclamps slidingly mounted tliereon,"a" no, able member movablelongitudinally 'of the. cylindenand adapted by its inward movement tosimultaneously lock the clamps upon a plate, a moving device connectedwith said- 5 clamps'slidingly mounted thereon, a movable member movablelongitudinally of the cylinder and adapted by its inward movement tosimultaneously lock the clamps upon a plate, an eccentric connected withsaid movable member and with said cylinder, adapted to receive anoperating tool and by its turning to move said movable memberlongitudinally of the cylinder, and locking mechanism adapted toautomatically a lock said movable member in its inner and outerpositions andto be disengaged in both of said positions only by theinsertion oi an operating tool, said-locking mechanism being furtheradapted to 'permit the withdrawal of said operating tool only when saidmov-' able member is in its inner or outer position. I

7 In combination, a plate-cylinder, plate-v clamps mounted andindependently adjustable thereon, a movable member, movablelongitudinally of said cylinder and adapted by its movement tosimultaneously move said clamps into plate-locking or unlocked position,a rotatable member rotatably mounted in said movable member. and

adapted to receive an operating tool'wl1ere-.

by said rotatable member may be turned to move said movable memberlongitudinally of the cylinder, a spring seated pin carried by saidcylinder and adapted to en ga e said rotatable member when said moveabl'h member is in plateloeking-position and automatically lock same insaid position, and means carried ,by said rotatable member and adaptedby the insertion of the operating tool to disengage said spring seatedpin,

from said rotatable member. I

8. In combination, a plate-cylinden plateclamps mounted andindependently adjustable thereon, a movable member movable lock the samein said'posit-ion, means carried by said rotatable member and adapted bythe insertion of the operating tool to dlsengage said spring-seated pinfrom said rotarotatable' member rotatably table member, and a second pincarried by said rotatable member and adapted to engage the operatingtool and permit its insertion or removal only when said rotatable.member is turned to bring said movable inder, independentlyadjustableplate clamps slidingly mounted on said cylinder and adapted by themovement of said member on saidcylinder to be simultaneously moved intoand out of plate-locking position, an

eccentric connected with'said cylinder and with said movable member andadapted.-

when turned to move said movable member longitudinally of said cylinderand having an opening adapted to receive an operating tool, and lockingdevices adapted to automatically lock said movable member inplate-locking position and alsoadapted to prevent the insertion orwithdrawal ofsaid" operating tool except when said movable member isincomplete platelocking position or in un-locke'd position.

10. In combination, a plate cylinder, :3.

I member movable longitudinally of said cylinder,independently-adjustable plate clamps slidingly mounted on said cylinderand adapted by the movement of said member on said cylinderto besimultaneously moved into and out of plate-locking position, aneccentric connected with said cylinder and with said movable member andadapted when turnedto move said movable member longitudinally of saidcylinder and having an opening adapted to receive an operating tool, aspring-seated pin carried by said cylinder and adapted to automaticallylock said eccentric against rotation when said plate locking member isin plate-locking posltion, locking devices carried by said eccentric andadapted to prevent the insertion of said looking tool into saidopeningexcept when said movable member is in complete plate-locking position orin unlocked position, and a movable pin carried by said eccentric andadapted to register with saidspring-seated pin when the movable. memberis in'plate locking position and by the insertion of the operating toolto force said spring-seated" pin out of locking engagement.

, WILLIAM EVEN SEN. WVitnesses MINNIE A. HUNTER, IVILLIAM H. DEBUSK.

